Abstract: A physiological signal measurement device is disclosed. In some implementations, the physiological signal measurement device includes a fixing element, a rack, a first sensor, and a second sensor. The fixing element is configured to be fixed on a limb of a user. The rack is configured to engage the fixing element and includes a first end and a second end distal to the first end. The first sensor is disposed on the first end of the rack. The sensor is disposed on the second end of the rack. The first end of the rack has a first stiffness, the second end of the rack has a second stiffness, and the first stiffness is higher than the second stiffness.

Abstract: An image processing method includes: calculating an area of a first label of a first medical image of a plurality of medical images with a plurality of labels; obtaining a first determination result based on whether the area of the first label is greater than a threshold value; obtaining a second determination result based on whether a second medical image of the medical images adjacent to the first medical image includes a second label overlapping a first projection area of the first label on the second medical image; and selectively deleting the first label on the first medical image according to the first determination result and the second determination result. The present disclosure further provides an image processing system to perform the image processing method.

Abstract: Disclosed herein are a time-of-flight (TOF) distance measuring method and a TOF distance measuring system, configured to measure a distance to a target. The TOF distance measuring method includes the following steps: sensing, by an optical sensor, a reflected light signal reflected by the target and obtaining a phase shift between the reflected light signal and an incident light signal, wherein the phase shift is smaller than 2?; obtaining a plurality pieces of first depth information according to the phase shift, wherein the plurality pieces of first depth information are a plurality pieces of depth information with phase mixing; obtaining, by a processing unit, a disparity of the reflected light signal corresponding to the incident light signal using epipolar geometry; obtaining a second depth information according to the disparity; and obtaining the distance from the plurality pieces of first depth information according to the second depth information.

Abstract: A time-of-flight distance measuring method and TOF distance measuring system. The distance measuring method includes: intermittently transmitting a plurality of pulses from a pulse generation unit; controlling a TOF sensor to allow each pixel of a plurality of pixels in the TOF sensor to continuously perform a first signal sampling first proportion for a first predetermined time on a first proportion of a plurality of reflected signals and performs a second signal sampling second proportion for a second predetermined time on a second proportion of a plurality of reflected signals, so as to generate a plurality of sampling results corresponding to the plurality of pixels; obtaining a plurality of depth information and a plurality of luminance information corresponding to the plurality of pixels according to the plurality of sampling results; and adjusting the first proportion and the second proportion according to the plurality of depth information and the plurality of luminance information.

Abstract: A 3D image sensing system includes: a 3D image sensor (100), including: a light-emitting module (102), configured to emit a structured light to a target (300), the structured light has a known pattern; and a light-sensing module (104) receives a reflected structured light of the structured light that is reflected by the target; and a processor (110), configured to perform a time-of-flight distance measurement to obtain a first distance corresponding to the target based on time-of-flights of the structured light and the reflected structured light, the first distance has a global offset, the processor (110) establishes an unknown distance image based on the reflected structured light, estimates a disparity between the unknown distance image and a known distance image according to the known pattern, calculates a global compensation coefficient based on the disparity, and compensates the first distance to eliminate the global offset according to the global compensation coefficient.

Abstract: An image processing method includes: calculating an area of a first label of a first medical image of a plurality of medical images with a plurality of labels; obtaining a first determination result based on whether the area of the first label is greater than a threshold value; obtaining a second determination result based on whether a second medical image of the medical images adjacent to the first medical image includes a second label overlapping a first projection area of the first label on the second medical image; and selectively deleting the first label on the first medical image according to the first determination result and the second determination result. The present disclosure further provides an image processing system to perform the image processing method.

Abstract: A 3D image sensing system includes: a 3D image sensor (100), including: a light-emitting module (102), configured to emit a structured light to a target (300), the structured light has a known pattern; and a light-sensing module (104) receives a reflected structured light of the structured light that is reflected by the target; and a processor (110), configured to perform a time-of-flight distance measurement to obtain a first distance corresponding to the target based on time-of-flights of the structured light and the reflected structured light, the first distance has a global offset, the processor (110) establishes an unknown distance image based on the reflected structured light, estimates a disparity between the unknown distance image and a known distance image according to the known pattern, calculates a global compensation coefficient based on the disparity, and compensates the first distance to eliminate the global offset according to the global compensation coefficient.

Abstract: The present disclosure provides a vertical-cavity surface-emitting laser, structured light module, terminal comprising the structured light module, and method for projecting the structured light thereof. The structured light module includes a plurality of light sources and a single diffractive optical element (DOE); wherein the plurality of light sources simultaneously emit a plurality beams of invisible light to the single DOE, wherein the single DOE has a pseudo-random optical pattern groove, wherein the invisible light of each light source passes through the DOE and emits a beam of spectral encoded structured light, and the beam of structured light comprises a pattern corresponding to the pseudo-random optical pattern groove. The DOE projects an overall structured light that is formed by superimposing a plurality of beams of structured light, and there is an offset between patterns of different beams of structured light.

Abstract: A control circuit having extended hold-up time is coupled to a bus path of a conversion circuit. The control circuit includes a bypass circuit, an energy storage capacitor, and an auxiliary power circuit. The auxiliary power circuit supplies an energy storage voltage to the energy storage capacitor according to a working voltage provided by the conversion circuit. When a bus voltage of the bus path is less than or equal to the energy storage voltage, the energy storage voltage is supplied to the bus path through the bypass circuit so that the bus voltage is greater than or equal to a predetermined voltage within a hold-up time.

Abstract: The present disclosure provides a vertical-cavity surface-emitting laser, structured light module, terminal comprising the structured light module, and method for projecting the structured light thereof. The structured light module includes a plurality of light sources and a single diffractive optical element (DOE); wherein the plurality of light sources simultaneously emit a plurality beams of invisible light to the single DOE, wherein the single DOE has a pseudo-random optical pattern groove, wherein the invisible light of each light source passes through the DOE and emits a beam of spectral encoded structured light, and the beam of structured light comprises a pattern corresponding to the pseudo-random optical pattern groove. The DOE projects an overall structured light that is formed by superimposing a plurality of beams of structured light, and there is an offset between patterns of different beams of structured light.

Abstract: An exposure-control system and an associated exposure control method are provided. The exposure-control system includes: an image capturing unit configured to capture a long-exposure image and a short-exposure image with a first exposure value and a second exposure value, respectively; and a processor, configured to calculate histograms of the long-exposure image and the short-exposure image, and calculate an exposure ratio according to the calculated histograms, the first and second exposure values, wherein when the exposure ratio is smaller than a first threshold, the processor switches a current exposure mode to a low dynamic range mode. When the exposure ratio is larger than a second threshold, the processor switches the current exposure mode to a high dynamic range mode. When the exposure ratio is between the first threshold and the second threshold, the processor does not switch the current exposure mode.

Abstract: An exposure-control system and an associated exposure control method are provided. The exposure-control system includes: an image capturing unit configured to capture a long-exposure image and a short-exposure image with a first exposure value and a second exposure value, respectively; and a processor, configured to calculate histograms of the long-exposure image and the short-exposure image, and calculate an exposure ratio according to the calculated histograms, the first and second exposure values, wherein when the exposure ratio is smaller than a first threshold, the processor switches a current exposure mode to a low dynamic range mode. When the exposure ratio is larger than a second threshold, the processor switches the current exposure mode to a high dynamic range mode. When the exposure ratio is between the first threshold and the second threshold, the processor does not switch the current exposure mode.

Abstract: This invention relates to a fabricated bedstead, in particular a fabricated bedstead that is applicable to a metal sofa bed or a bunk bed. The invention mainly comprises a bedstead that is made of different lengths of cannular shafts. The invention enables respective round hook portions on one ends of pluralities of thin vertical lines and thin horizontal lines to pierce through those cannular shafts, and those round hook portions are correspondingly positioned in waterdrop-shaped trough portions of said cannular shafts. The fabricated member of the invention effectively reduces the volume of material and manufacturing cost.